Turret-operating mechanism for automatic screw-machines.



J. H. JANN. I TURRBT OPERATING MECHANISM FOR AUTOMATIC SCREW MACHINES.APPLICATION FILED AUG. 21, 1907- 1,109,8413, Patented Sept. 8, 1914.

5'SHEETSSHEET 1. /5

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THE Norems PFTFTPS ca, PHOTO-LITIHOH wAsHlNGmN, D. c.

J. H. JANN. TURRET OPERATING MECHANISM FOR AUTOMATIC SCREW MACHINES.

APPLICATION FILED AUG.21, 1907.

1, 1 09,843. Patented Sept. 8, 1914.

5 SHEETS-SHEBT 2.

. J. H. JANN. TURRETOPERATING MECHANISM FOR AUTOMATIC SCREW MACHINES.

APPLICATION FILED AUG. 21, 1907.

Patented Sept. 8, 1914.

S-SHEET 3.

5 SHEET J. H. JANN. TURHBT OPERATING MECHANISM FOR AUTOMATIC SCREWMACHINES.

APPLIGATION FILED AUG. 21, 1907.

1,109,843; Patented s .8,1914.

5 SHEE HBET 4.

J. H. JANN. TURRBT OPERATING MECHANISM FOR AUTOMATIC SCREW MAGHINES..

APPLICATION FILED AUG. 21, 190'7. 1,109,843..

Patented Sept. 8, 1914.

5 SHEETS-SHEET 5.

THE NORVRIS PETERS co. F'HOTO-LITHO. WASHING7ON, u. c

JOHN HUBERT .rAiviv, or CHICAGO, ILLINOIS.

HTURRET-OPERATINGI MECHANISM FOR AUTOMATIC scREw-Miicnmns.

ioasae.

To all whom it may concern Be it known that I, JOHN H BERT JANN, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented new and useful Im-' provelnents inTurret-Operating Mechanism for Automatic Screw-Machines, :of which thefollowing is a specification.

' The object of this invention is to providean improved mechanism foroperating the turret of an automatic screw machine to enable a rapidoperation of the machinewhether the turret carries the 11131111111111number or a less number of tools.- And a further object of the inventionis to avoid the reciprocation of the turret when a tool socket isskipped and provide for a reciprocation of the turret only for each toolit carries. 1

The invention also has in view to provide a mechanism of simple andsubstantial char acter for turning and reciprocating a screw machineturret.

In the accompanying drawings illustrating the inventionFigure 1 is afront elevation showing as much of the frame of the screw machine as isnecessary to indicate the position and arrangement of my improvedmechanism. Fig. 2 is an end elevation. Fig. 3 15 an enlarged sectionalVleW on the line 3-3 of Fig. 1. Fig. 1 isa detail sectional view on theline 1i'of Fig. 8. F ig. 5 is a detail view of theclutch collar. Fig. 6is a sectional View on the line 6- 6 of Fig. 5. Fig. 7 is a detailview'of the clutch gear. Fig. 8 is a sectional view on the line 8-8 ofFig. 7 Fig. 9 is a detail view of the clutch bolt operating plunger.FigJlO is a detail sectional view. Fig. 11-is a side elevation of ascrew machine embodying the features of the present invention,illustrating the relation of the tool holders with respect to the workholder. Fig. 121s a face view of the turret'showing' some tools 1 inplace.

\ Referring to the drawings theturret 11 has its shank 12 -slidablymounted in the frame 13 of the screw machine. Fig. 11 of the drawingsillustrates the relation between the tool holders of the turret and thework holder A." A groovedcollar 141' is rigidly mounted on the shank ofthe turret and a gear 15 is keyed to the shank of the turret by afeather(not shown), in a familiar manner to enable the gear to impart a rotarySpecification of Letters Patent. Application filed August 21, 1907.Serial No; 389,426.

clutch shaft 21.

' Patented. Sept. 8, 1914.

' motion to the turret but without participating inthereciprocatingmovement of the turretand shank. A lever 16 is pivotally mounted at 16on the frame of the machine and a roller 17 on the upper end of thislever is arranged in the grooved collar 14. A roller 18 onthe lower endof the lever 16 i is engaged by cams 19 on a cam drum 20 mounted on theshaft 20-suitably journaled 1n bearings in the frame. The cams foractuating the lever 16' are formed bystrips secured on the surface ofthe drum by bolts drum and to each other'in orderto provide for the"proper oscillation of the lever to' reciprocate the turret. The drum isprovided with a plurality of holes 20" and the strips haveslots 19 toreceive the bolts 19 whereby the adjustment of the strips to properposition can be readily and easily effected.

The gear 15 is driven by agear 21 onthe The gears 15 and 21-areproportioned in diameter in relation to the number of tool sockets inthe turret, that'is to sayif the turret has four tool sockets thediameterof the gear 15 will be four'times that ofthe gear 21 and if theturret has six tool'socke'ts the diameter'of the gear 15 will be sixtimes 'thatlof the gear 21.- The ar- 19 in an angular relation to theaxis of the J rangementissuch that if the gear 21 makes one" complete{revolutionat a time it will in dex'the turret successively toeach ofthe tool sockets therein and if the gear 21 makes two revolutions ateach operation of the machine it will index the turret to-every othertool "socket. I

A large gear .22 is loosely mounted on the elongated -hub22 of thegear21 (Figs. 1", 8,

10)' and this. gear 22 meshes with a gear 23 which in turn fmesheswitlra, gear 24 on a.

shaft 25 (Fig. 2). This shaft 25 carriesav gear 26 which meshes with agear 27 onthe shaft 28 and on this latter shaft is a gear 29 whichmeshes with agear 30 on the power shaft'31. A gear 32 on shaft 25 mesheswith" a gear 33 on a shaft 3 1 which carries a beveled gear 35 meshingwith a beveled gear 36 on' the worm shaft 37. Thisworm shaft is providedwitha worm which'meshes with a worm gear 39 on the cam shaft 20 (Figs.1, 2). The gear 30 also meshes with an intermediate gear '30" which inturn meshes with a ear 30 which drives thedie holder (not shown). "Theseveral shafts" Ill hereinbefore mentioned are suitably supported inbearings on the main frame of the machine.

A clutch collar 40 having a groove 40 (Figs. 5, 6) is rigidly mounted onthe hub 22 of gear 21 (Figs. 1, 10) and it is pro vided with a clutchbolt 41 normally pressed outward by a spring 42. The spring is confinedwithin an opening 42 in the clutch collar 40 by a pin 43 on the clutchbolt (Fig. 6). The clutch bolt projects intothe groove 40 and isprovided with a recess 41" to register with said groove. The gear 22(Figs. 7, 8) is provided with a lurality of sockets 44 to receive theclutch bdlt 41 whereby locking engagement is made between the clutchcollar 40 and the gear 22. Hard steel plugs 44 are secured in thesockets 44 to prevent wear. The gear 22 is mounted to run continuouslyon the hub 22 of the ear 21 and is automatically locked by the c utchbolt to the clutch collar to turn the gear 21 and the gear 15 to indexthe 'turret.- It. will therefore be understood that the gears 15 and 21are stationary while the tools are doingtheir work and only move to turnthe turret and index another tool in position for work.

A lever 45 is mounted on a rock shaft 46 supported in a bracket 47 onthe'main frame (Fig. 3). An arm 48 on the shaft 46 operates a plunger 49which carries a shoe 50 ar-.

ranged to travel in the groove 40 of the collar 40. This shoe has awedge 50 (Fig. 9) which engages the clutch bolt 41 and withdraws andholds it out of engagement with the clutch gear 22, the shoe being heldin operative engagement with the clutch bolt by a spring 51 (Fig.3). Thelever 45 has a pivoted finger 45 which is arranged to be engaged by atripper 52 fastenedto the cam.

drum 20 and projecting beyond the periphery thereof (Fig. 3). g The camdrum has a peripheral groove 53 to receive the head of a bolt 54 and thebolt is held in adjusted posi:

tion and the trippersecured in lace on the drum by a nut 55 on the boltFig. 4). A tripper is provided for each tool and when a tool is omittedfrom the turret a tripper will be taken off of the drum. WVhen theplunger 49 is operated to withdraw the wedge from engagement with theclutch bolt the latter is projected forward by its spring into one ofthe sockets 44 and the turret is then turned to bring another tool intooperativeposition. The wedge on the plunger is held out of engagementwith the clutch bolt while the toe 56 of the tripper is inengagementwith the finger 45 of the lever 45. Therefore when it is desired to usetools in all of the sockets of the turret, (assuming that there arefour) the trippers, one for each tool socket, will each be made with atoe which will engage with the finger 45. a sufficient length of time tohold the wedge out of engagement with the clutch bolt and permit theshaft 21 to position and does not reciprocate.

make a complete revolution, thereby turning the turret a quarter turnand indexing the four tools successively in operative position. If it isonly desired to use two tools on the turret provided with four toolsockets, only two trippers are used but the toe of each tripper issuliiciently widened to provide for holding the wedge 50 out ofengagement with the clutch bolt until the clutch shaft and gear 21 havemade two complete revolutions, suflicient to turn the turret a halfturn. The turret is turned a half turn, to skip a socket, withoutreciprocating the turret and this saves considerable time and avoidswear of the parts. Then the tripper passes the lever finger 45 thespring 51 returns the wedge into position in the collar groove to engageand withdraw the clutch bolt from. engagement with the gear 22 wherebythe turret turning mechanism is brought to rest, {and at this tune thelever 16 is operated to reciprocate the turret and carry the tool to andfrom the work. The pivoted finger 45 which constitutes a part of thelever 45 ienables the drums to be turned backward gwithout operating theplunger.

The invention is simple in construction {and operation and provides forautomatiically reciprocating the turret to carry each :tool to and fromthe work and for turning ithe turretwithout reciprocating it to bringlthe tools. carried thereby successively into i operative position. Asheretofore pointed out the invention provides for reciprocating theturret only when a tool is indexed for operation and thus I avoid theloss of time and Wear and tear on the parts which re- ;sults fromreciprocating the turret for each roo lsocket thereof when the tools areomitted.

from some of the sockets. The machine is automatic in action and may beopg erated with great rapidity, and it can be greadily adapted for usewith the maximum number of tools the turret is capable of holding orwith a less number, as may be desired.

I It will be observed that in my invention theturret is onlyreciprocated for the purpose of carrying the tools. to and from thePwork and not for the purpose of turning the turret toindex the tools.In factthe turret is in a fixed position, which is, in this adaptationof the invention, the initial position of its reciprocating movement,when it is turned to index the tools. And it will also be observed thatthe turret can not have its. reciprocating movement until a tool hasbeen properly indexed and this is true whether there is' a tool in eachsocket or whether some of the sockets are empty. In the lattercase theturret continues toturn, skipping the empty socket or sockets until atool is indexed and during this turning movement the turret remainsinits fixed What I claim and desire to secure by Letters Patent is:

1. In a machine of the character described, the combination with awork-holder, a turret having aseries of tool holders, and indexing meanstherefor, of means for controlling the operation of the indexing meansto rotatably set the turret to index the toola continuously operatingdriving element f and a drive-connection extending between the drivingelement and the'turret whereby there may be imparted to the turret acomplete rotation thereof by a continuous movement of the turret, andmeans for controlling the operation of the indexing means to rotatablyset the turret tovindex the tool-- holders with respect to thework-holder by a continuous uniform movement from one index position toa successive index position or from one index position to anon-successive index position and skipping the intersaid non-successiveindex; positions, said controlling means comprlslng a clutch 1n-' cluded1n the sa d drive-connectlon, a clutch mediate index position orpositions between disconnector normally holding the clutch;

elements disconnected, and a trip device for releasing the clutchdisconnector including a rotating element having aplurality of taptheclutch disconnector lying in the path of the tappets. I

, p JOHN HUBERT JANN.

Witnesses:

i ;O. BELT, I

KIDDIYYEI.

Copies of this patent maybe obtained for five cents' each, by addressingthe Commissioner f-Patents,

washingtomm. G. v i

40v pets adjustable uponthe rotating element,

